Imagine a circle lying on xy plane and initially at rest w.r.t. frame S.(adsbygoogle = window.adsbygoogle || []).push({});

Then S' comes and gets the circle and moves it with velocity v along x axis.

The radius which is along x axis,should be contracted but not other radii and this means that the circle becomes an ellipse and because its sth that needs only a comparison between two not aligned radii,S' will notice the deformation and so S' realizes that he is moving but this can't be true.

What's wrong?

thanks

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# Moving circle deformation

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